The SLW-1 model for efficient prediction of radiative transfer in high temperature gases

作者：Solovjov Vladimir P; Lemonnier Denis; Webb Brent W^*

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2011, 112(7): 1205-1212.

DOI：10.1016/j.jqsrt.2010.08.009

• SLW method
• SLW-1 method
• Gas radiation

A reduced SLW model consisting of a single gray gas and a clear gas is developed as an efficient spectral method for modeling radiation transfer in high temperature gases. It is shown that the SLW-1 model is not simply a reduction of the SLW method to the case of a single gray gas. Good accuracy can be achieved by the optimal choice of the model's gray gas absorption coefficient and its weight by application of the Absorption-Line Blackbody Distribution ALBDF), which is calculated with a high-resolution spectral database. Different approaches to the construction of the SLW-1 model are shown. The SLW-1 model absorption spectrum still has the line structure corresponding to the real gas absorption spectrum, which is maintained with fixed spectral intervals in non-uniform medium with the help of the reference approach. The validation of the SLW-1 model is performed by comparison with (i) benchmark solutions obtained by the line-by-line method and (ii) the SLW method with a large number of gray gases. Formulation of the SLW-1 method is also shown with the Two-Flux method and P-1 differential approximation.

• 出版日期2011-5